/* * Bus independent FreeBSD shim for the aic7xxx based adaptec SCSI controllers * * Copyright (c) 1994, 1995, 1996, 1997, 1998, 1999, 2000 Justin T. Gibbs. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU Public License ("GPL"). * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id$ * * $FreeBSD$ */ #include #include #include #ifndef AHC_TMODE_ENABLE #define AHC_TMODE_ENABLE 0 #endif #define ccb_scb_ptr spriv_ptr0 #define ccb_ahc_ptr spriv_ptr1 #ifdef AHC_DEBUG static int ahc_debug = AHC_DEBUG; #endif static void ahc_freebsd_intr(void *arg); #if UNUSED static void ahc_dump_targcmd(struct target_cmd *cmd); #endif static void ahc_action(struct cam_sim *sim, union ccb *ccb); static void ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel, struct ccb_trans_settings *cts); static void ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg); static void ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments, int error); static void ahc_poll(struct cam_sim *sim); static void ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim, struct ccb_scsiio *csio, struct scb *scb); static void ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb); static int ahc_create_path(struct ahc_softc *ahc, char channel, u_int target, u_int lun, struct cam_path **path); static void ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb); static int ahc_create_path(struct ahc_softc *ahc, char channel, u_int target, u_int lun, struct cam_path **path) { path_id_t path_id; if (channel == 'B') path_id = cam_sim_path(ahc->platform_data->sim_b); else path_id = cam_sim_path(ahc->platform_data->sim); return (xpt_create_path(path, /*periph*/NULL, path_id, target, lun)); } /* * Attach all the sub-devices we can find */ int ahc_attach(struct ahc_softc *ahc) { char ahc_info[256]; struct ccb_setasync csa; struct cam_devq *devq; int bus_id; int bus_id2; struct cam_sim *sim; struct cam_sim *sim2; struct cam_path *path; struct cam_path *path2; long s; int count; int error; count = 0; sim = NULL; sim2 = NULL; ahc_controller_info(ahc, ahc_info); printf("%s\n", ahc_info); ahc_lock(ahc, &s); /* Hook up our interrupt handler */ if ((error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq, INTR_TYPE_CAM, ahc_freebsd_intr, ahc, &ahc->platform_data->ih)) != 0) { device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n", error); goto fail; } /* * Attach secondary channel first if the user has * declared it the primary channel. */ if ((ahc->flags & AHC_CHANNEL_B_PRIMARY) != 0) { bus_id = 1; bus_id2 = 0; } else { bus_id = 0; bus_id2 = 1; } /* * Create the device queue for our SIM(s). */ devq = cam_simq_alloc(AHC_SCB_MAX); if (devq == NULL) goto fail; /* * Construct our first channel SIM entry */ sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc, device_get_unit(ahc->dev_softc), 1, AHC_SCB_MAX, devq); if (sim == NULL) { cam_simq_free(devq); goto fail; } if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) { cam_sim_free(sim, /*free_devq*/TRUE); sim = NULL; goto fail; } if (xpt_create_path(&path, /*periph*/NULL, cam_sim_path(sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(sim)); cam_sim_free(sim, /*free_devq*/TRUE); sim = NULL; goto fail; } xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_LOST_DEVICE; csa.callback = ahc_async; csa.callback_arg = sim; xpt_action((union ccb *)&csa); count++; if (ahc->features & AHC_TWIN) { sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc, device_get_unit(ahc->dev_softc), 1, AHC_SCB_MAX, devq); if (sim2 == NULL) { printf("ahc_attach: Unable to attach second " "bus due to resource shortage"); goto fail; } if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) { printf("ahc_attach: Unable to attach second " "bus due to resource shortage"); /* * We do not want to destroy the device queue * because the first bus is using it. */ cam_sim_free(sim2, /*free_devq*/FALSE); goto fail; } if (xpt_create_path(&path2, /*periph*/NULL, cam_sim_path(sim2), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(sim2)); cam_sim_free(sim2, /*free_devq*/FALSE); sim2 = NULL; goto fail; } xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5); csa.ccb_h.func_code = XPT_SASYNC_CB; csa.event_enable = AC_LOST_DEVICE; csa.callback = ahc_async; csa.callback_arg = sim2; xpt_action((union ccb *)&csa); count++; } fail: if ((ahc->flags & AHC_CHANNEL_B_PRIMARY) != 0) { ahc->platform_data->sim_b = sim; ahc->platform_data->path_b = path; ahc->platform_data->sim = sim2; ahc->platform_data->path = path2; } else { ahc->platform_data->sim = sim; ahc->platform_data->path = path; ahc->platform_data->sim_b = sim2; ahc->platform_data->path_b = path2; } ahc_unlock(ahc, &s); if (count != 0) /* We have to wait until after any system dumps... */ EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown, ahc, SHUTDOWN_PRI_DEFAULT); return (count); } /* * Catch an interrupt from the adapter */ void ahc_freebsd_intr(void *arg) { struct ahc_softc *ahc; ahc = (struct ahc_softc *)arg; ahc_intr(ahc); } /* * We have an scb which has been processed by the * adaptor, now we look to see how the operation * went. */ void ahc_done(struct ahc_softc *ahc, struct scb *scb) { union ccb *ccb; CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_done - scb %d\n", scb->hscb->tag)); ccb = scb->io_ctx; LIST_REMOVE(scb, pending_links); if (ccb->ccb_h.func_code == XPT_SCSI_IO && ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0 || ccb->csio.tag_action == CAM_TAG_ACTION_NONE) && (ahc->features & AHC_SCB_BTT) == 0) { struct scb_tailq *untagged_q; untagged_q = &ahc->untagged_queues[ccb->ccb_h.target_id]; TAILQ_REMOVE(untagged_q, scb, links.tqe); ahc_run_untagged_queue(ahc, untagged_q); } untimeout(ahc_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch); if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { bus_dmasync_op_t op; if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_POSTREAD; else op = BUS_DMASYNC_POSTWRITE; bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op); bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); } if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) ccb->ccb_h.status |= CAM_REQ_CMP; ccb->ccb_h.status &= ~CAM_SIM_QUEUED; ahc_free_scb(ahc, scb); xpt_done(ccb); return; } /* * If the recovery SCB completes, we have to be * out of our timeout. */ if ((scb->flags & SCB_RECOVERY_SCB) != 0) { struct scb *list_scb; /* * We were able to complete the command successfully, * so reinstate the timeouts for all other pending * commands. */ LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { union ccb *ccb; ccb = list_scb->io_ctx; ccb->ccb_h.timeout_ch = timeout(ahc_timeout, list_scb, (ccb->ccb_h.timeout * hz)/1000); } /* * Ensure that we didn't put a second instance of this * SCB into the QINFIFO. */ ahc_search_qinfifo(ahc, SCB_GET_TARGET(ahc, scb), SCB_GET_CHANNEL(ahc, scb), SCB_GET_LUN(scb), scb->hscb->tag, ROLE_INITIATOR, /*status*/0, SEARCH_REMOVE); if (ahc_get_transaction_status(scb) == CAM_BDR_SENT || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED) ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); ahc_print_path(ahc, scb); printf("no longer in timeout, status = %x\n", ccb->ccb_h.status); } /* Don't clobber any existing error state */ if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) { ccb->ccb_h.status |= CAM_REQ_CMP; } else if ((scb->flags & SCB_SENSE) != 0) { /* * We performed autosense retrieval. * * Zero any sense not transferred by the * device. The SCSI spec mandates that any * untransfered data should be assumed to be * zero. Complete the 'bounce' of sense information * through buffers accessible via bus-space by * copying it into the clients csio. */ memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data)); memcpy(&ccb->csio.sense_data, &ahc->scb_data->sense[scb->hscb->tag], (scb->sg_list->len & AHC_SG_LEN_MASK) - ccb->csio.sense_resid); scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID; } ccb->ccb_h.status &= ~CAM_SIM_QUEUED; ahc_free_scb(ahc, scb); xpt_done(ccb); } static void ahc_action(struct cam_sim *sim, union ccb *ccb) { struct ahc_softc *ahc; struct tmode_lstate *lstate; u_int target_id; u_int our_id; long s; CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n")); ahc = (struct ahc_softc *)cam_sim_softc(sim); target_id = ccb->ccb_h.target_id; our_id = SIM_SCSI_ID(ahc, sim); switch (ccb->ccb_h.func_code) { /* Common cases first */ case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */ case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/ { struct tmode_tstate *tstate; cam_status status; status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate, &lstate, TRUE); if (status != CAM_REQ_CMP) { if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { /* Response from the black hole device */ tstate = NULL; lstate = ahc->black_hole; } else { ccb->ccb_h.status = status; xpt_done(ccb); break; } } if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) { ahc_lock(ahc, &s); SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h, sim_links.sle); ccb->ccb_h.status = CAM_REQ_INPROG; if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0) ahc_run_tqinfifo(ahc, /*paused*/FALSE); ahc_unlock(ahc, &s); break; } /* * The target_id represents the target we attempt to * select. In target mode, this is the initiator of * the original command. */ our_id = target_id; target_id = ccb->csio.init_id; /* FALLTHROUGH */ } case XPT_SCSI_IO: /* Execute the requested I/O operation */ case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ { struct scb *scb; struct hardware_scb *hscb; struct ahc_initiator_tinfo *tinfo; struct tmode_tstate *tstate; uint16_t mask; /* * get an scb to use. */ if ((scb = ahc_get_scb(ahc)) == NULL) { ahc_lock(ahc, &s); ahc->flags |= AHC_RESOURCE_SHORTAGE; ahc_unlock(ahc, &s); xpt_freeze_simq(sim, /*count*/1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); return; } hscb = scb->hscb; CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("start scb(%p)\n", scb)); scb->io_ctx = ccb; /* * So we can find the SCB when an abort is requested */ ccb->ccb_h.ccb_scb_ptr = scb; ccb->ccb_h.ccb_ahc_ptr = ahc; /* * Put all the arguments for the xfer in the scb */ hscb->control = 0; hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id); hscb->lun = ccb->ccb_h.target_lun; mask = SCB_GET_TARGET_MASK(ahc, scb); tinfo = ahc_fetch_transinfo(ahc, SIM_CHANNEL(ahc, sim), our_id, target_id, &tstate); hscb->scsirate = tinfo->scsirate; hscb->scsioffset = tinfo->current.offset; if ((tstate->ultraenb & mask) != 0) hscb->control |= ULTRAENB; if ((tstate->discenable & mask) != 0 && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0) hscb->control |= DISCENB; if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0 && (tinfo->current.width != 0 || tinfo->current.period != 0)) { scb->flags |= SCB_NEGOTIATE; hscb->control |= MK_MESSAGE; } if (ccb->ccb_h.func_code == XPT_RESET_DEV) { hscb->cdb_len = 0; scb->flags |= SCB_DEVICE_RESET; hscb->control |= MK_MESSAGE; ahc_execute_scb(scb, NULL, 0, 0); } else { if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { struct target_data *tdata; tdata = &hscb->shared_data.tdata; if (ahc->pending_device == lstate) { scb->flags |= SCB_TARGET_IMMEDIATE; ahc->pending_device = NULL; } hscb->control |= TARGET_SCB; tdata->target_phases = IDENTIFY_SEEN; if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) { tdata->target_phases |= SPHASE_PENDING; tdata->scsi_status = ccb->csio.scsi_status; } tdata->initiator_tag = ccb->csio.tag_id; } if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) hscb->control |= ccb->csio.tag_action; ahc_setup_data(ahc, sim, &ccb->csio, scb); } break; } case XPT_NOTIFY_ACK: case XPT_IMMED_NOTIFY: { struct tmode_tstate *tstate; struct tmode_lstate *lstate; cam_status status; status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate, &lstate, TRUE); if (status != CAM_REQ_CMP) { ccb->ccb_h.status = status; xpt_done(ccb); break; } SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h, sim_links.sle); ccb->ccb_h.status = CAM_REQ_INPROG; ahc_send_lstate_events(ahc, lstate); break; } case XPT_EN_LUN: /* Enable LUN as a target */ ahc_handle_en_lun(ahc, sim, ccb); xpt_done(ccb); break; case XPT_ABORT: /* Abort the specified CCB */ { ahc_abort_ccb(ahc, sim, ccb); break; } case XPT_SET_TRAN_SETTINGS: { #ifdef AHC_NEW_TRAN_SETTINGS struct ahc_devinfo devinfo; struct ccb_trans_settings *cts; struct ccb_trans_settings_scsi *scsi; struct ccb_trans_settings_spi *spi; struct ahc_initiator_tinfo *tinfo; struct tmode_tstate *tstate; uint16_t *discenable; uint16_t *tagenable; u_int update_type; cts = &ccb->cts; scsi = &cts->proto_specific.scsi; spi = &cts->xport_specific.spi; ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), cts->ccb_h.target_id, cts->ccb_h.target_lun, SIM_CHANNEL(ahc, sim), ROLE_UNKNOWN); tinfo = ahc_fetch_transinfo(ahc, devinfo.channel, devinfo.our_scsiid, devinfo.target, &tstate); update_type = 0; if (cts->type == CTS_TYPE_CURRENT_SETTINGS) { update_type |= AHC_TRANS_GOAL; discenable = &tstate->discenable; tagenable = &tstate->tagenable; tinfo->current.protocol_version = cts->protocol_version; tinfo->current.transport_version = cts->transport_version; tinfo->goal.protocol_version = cts->protocol_version; tinfo->goal.transport_version = cts->transport_version; } else if (cts->type == CTS_TYPE_USER_SETTINGS) { update_type |= AHC_TRANS_USER; discenable = &ahc->user_discenable; tagenable = &ahc->user_tagenable; tinfo->user.protocol_version = cts->protocol_version; tinfo->user.transport_version = cts->transport_version; } else { ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } ahc_lock(ahc, &s); if ((spi->valid & CTS_SPI_VALID_DISC) != 0) { if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0) *discenable |= devinfo.target_mask; else *discenable &= ~devinfo.target_mask; } if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) { if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) *tagenable |= devinfo.target_mask; else *tagenable &= ~devinfo.target_mask; } if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) { ahc_validate_width(ahc, &spi->bus_width); ahc_set_width(ahc, &devinfo, spi->bus_width, update_type, /*paused*/FALSE); } if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) { if (update_type == AHC_TRANS_USER) spi->ppr_options = tinfo->user.ppr_options; else spi->ppr_options = tinfo->goal.ppr_options; } if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) { if (update_type == AHC_TRANS_USER) spi->sync_offset = tinfo->user.offset; else spi->sync_offset = tinfo->goal.offset; } if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) { if (update_type == AHC_TRANS_USER) spi->sync_period = tinfo->user.period; else spi->sync_period = tinfo->goal.period; } if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0) || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) { struct ahc_syncrate *syncrate; u_int maxsync; if ((ahc->features & AHC_ULTRA2) != 0) maxsync = AHC_SYNCRATE_DT; else if ((ahc->features & AHC_ULTRA) != 0) maxsync = AHC_SYNCRATE_ULTRA; else maxsync = AHC_SYNCRATE_FAST; syncrate = ahc_find_syncrate(ahc, &spi->sync_period, &spi->ppr_options, maxsync); ahc_validate_offset(ahc, syncrate, &spi->sync_offset, spi->bus_width); /* We use a period of 0 to represent async */ if (spi->sync_offset == 0) { spi->sync_period = 0; spi->ppr_options = 0; } ahc_set_syncrate(ahc, &devinfo, syncrate, spi->sync_period, spi->sync_offset, spi->ppr_options, update_type, /*paused*/FALSE); } ahc_unlock(ahc, &s); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); #else struct ahc_devinfo devinfo; struct ccb_trans_settings *cts; struct ahc_initiator_tinfo *tinfo; struct tmode_tstate *tstate; uint16_t *discenable; uint16_t *tagenable; u_int update_type; long s; cts = &ccb->cts; ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), cts->ccb_h.target_id, cts->ccb_h.target_lun, SIM_CHANNEL(ahc, sim), ROLE_UNKNOWN); tinfo = ahc_fetch_transinfo(ahc, devinfo.channel, devinfo.our_scsiid, devinfo.target, &tstate); update_type = 0; if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) { update_type |= AHC_TRANS_GOAL; discenable = &tstate->discenable; tagenable = &tstate->tagenable; } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { update_type |= AHC_TRANS_USER; discenable = &ahc->user_discenable; tagenable = &ahc->user_tagenable; } else { ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } ahc_lock(ahc, &s); if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) { if ((cts->flags & CCB_TRANS_DISC_ENB) != 0) *discenable |= devinfo.target_mask; else *discenable &= ~devinfo.target_mask; } if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) { if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) *tagenable |= devinfo.target_mask; else *tagenable &= ~devinfo.target_mask; } if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) { ahc_validate_width(ahc, &cts->bus_width); ahc_set_width(ahc, &devinfo, cts->bus_width, update_type, /*paused*/FALSE); } if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) { if (update_type == AHC_TRANS_USER) cts->sync_offset = tinfo->user.offset; else cts->sync_offset = tinfo->goal.offset; } if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) { if (update_type == AHC_TRANS_USER) cts->sync_period = tinfo->user.period; else cts->sync_period = tinfo->goal.period; } if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0) || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) { struct ahc_syncrate *syncrate; u_int ppr_options; u_int maxsync; if ((ahc->features & AHC_ULTRA2) != 0) maxsync = AHC_SYNCRATE_DT; else if ((ahc->features & AHC_ULTRA) != 0) maxsync = AHC_SYNCRATE_ULTRA; else maxsync = AHC_SYNCRATE_FAST; ppr_options = 0; if (cts->sync_period <= 9) ppr_options = MSG_EXT_PPR_DT_REQ; syncrate = ahc_find_syncrate(ahc, &cts->sync_period, &ppr_options, maxsync); ahc_validate_offset(ahc, syncrate, &cts->sync_offset, MSG_EXT_WDTR_BUS_8_BIT); /* We use a period of 0 to represent async */ if (cts->sync_offset == 0) { cts->sync_period = 0; ppr_options = 0; } if (ppr_options == MSG_EXT_PPR_DT_REQ && tinfo->user.transport_version >= 3) { tinfo->goal.transport_version = tinfo->user.transport_version; tinfo->current.transport_version = tinfo->user.transport_version; } ahc_set_syncrate(ahc, &devinfo, syncrate, cts->sync_period, cts->sync_offset, ppr_options, update_type, /*paused*/FALSE); } ahc_unlock(ahc, &s); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); #endif break; } case XPT_GET_TRAN_SETTINGS: /* Get default/user set transfer settings for the target */ { ahc_lock(ahc, &s); ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim), SIM_CHANNEL(ahc, sim), &ccb->cts); ahc_unlock(ahc, &s); xpt_done(ccb); break; } case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg; uint32_t size_mb; uint32_t secs_per_cylinder; int extended; ccg = &ccb->ccg; size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); extended = SIM_IS_SCSIBUS_B(ahc, sim) ? ahc->flags & AHC_EXTENDED_TRANS_B : ahc->flags & AHC_EXTENDED_TRANS_A; if (size_mb > 1024 && extended) { ccg->heads = 255; ccg->secs_per_track = 63; } else { ccg->heads = 64; ccg->secs_per_track = 32; } secs_per_cylinder = ccg->heads * ccg->secs_per_track; ccg->cylinders = ccg->volume_size / secs_per_cylinder; ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_RESET_BUS: /* Reset the specified SCSI bus */ { int found; ahc_lock(ahc, &s); found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim), /*initiate reset*/TRUE); ahc_unlock(ahc, &s); if (bootverbose) { xpt_print_path(SIM_PATH(ahc, sim)); printf("SCSI bus reset delivered. " "%d SCBs aborted.\n", found); } ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_TERM_IO: /* Terminate the I/O process */ /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; case XPT_PATH_INQ: /* Path routing inquiry */ { struct ccb_pathinq *cpi = &ccb->cpi; cpi->version_num = 1; /* XXX??? */ cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE; if ((ahc->features & AHC_WIDE) != 0) cpi->hba_inquiry |= PI_WIDE_16; if ((ahc->flags & AHC_TARGETMODE) != 0) { cpi->target_sprt = PIT_PROCESSOR | PIT_DISCONNECT | PIT_TERM_IO; } else { cpi->target_sprt = 0; } cpi->hba_misc = (ahc->flags & AHC_INITIATORMODE) ? 0 : PIM_NOINITIATOR; cpi->hba_eng_cnt = 0; cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7; cpi->max_lun = 64; if (SIM_IS_SCSIBUS_B(ahc, sim)) { cpi->initiator_id = ahc->our_id_b; if ((ahc->flags & AHC_RESET_BUS_B) == 0) cpi->hba_misc |= PIM_NOBUSRESET; } else { cpi->initiator_id = ahc->our_id; if ((ahc->flags & AHC_RESET_BUS_A) == 0) cpi->hba_misc |= PIM_NOBUSRESET; } cpi->bus_id = cam_sim_bus(sim); cpi->base_transfer_speed = 3300; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); #ifdef AHC_NEW_TRAN_SETTINGS cpi->protocol = PROTO_SCSI; cpi->protocol_version = SCSI_REV_2; cpi->transport = XPORT_SPI; cpi->transport_version = 2; cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST; if ((ahc->features & AHC_DT) != 0) { cpi->transport_version = 3; cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST; } #endif cpi->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } default: ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } } static void ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel, struct ccb_trans_settings *cts) { #ifdef AHC_NEW_TRAN_SETTINGS struct ahc_devinfo devinfo; struct ccb_trans_settings_scsi *scsi; struct ccb_trans_settings_spi *spi; struct ahc_initiator_tinfo *targ_info; struct tmode_tstate *tstate; struct ahc_transinfo *tinfo; scsi = &cts->proto_specific.scsi; spi = &cts->xport_specific.spi; ahc_compile_devinfo(&devinfo, our_id, cts->ccb_h.target_id, cts->ccb_h.target_lun, channel, ROLE_UNKNOWN); targ_info = ahc_fetch_transinfo(ahc, devinfo.channel, devinfo.our_scsiid, devinfo.target, &tstate); if (cts->type == CTS_TYPE_CURRENT_SETTINGS) tinfo = &targ_info->current; else tinfo = &targ_info->user; scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; if (cts->type == CTS_TYPE_USER_SETTINGS) { if ((ahc->user_discenable & devinfo.target_mask) != 0) spi->flags |= CTS_SPI_FLAGS_DISC_ENB; if ((ahc->user_tagenable & devinfo.target_mask) != 0) scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; } else { if ((tstate->discenable & devinfo.target_mask) != 0) spi->flags |= CTS_SPI_FLAGS_DISC_ENB; if ((tstate->tagenable & devinfo.target_mask) != 0) scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; } cts->protocol_version = tinfo->protocol_version; cts->transport_version = tinfo->transport_version; spi->sync_period = tinfo->period; spi->sync_offset = tinfo->offset; spi->bus_width = tinfo->width; spi->ppr_options = tinfo->ppr_options; cts->protocol = PROTO_SCSI; cts->transport = XPORT_SPI; scsi->valid = CTS_SCSI_VALID_TQ; spi->valid = CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_SYNC_OFFSET | CTS_SPI_VALID_BUS_WIDTH | CTS_SPI_VALID_DISC | CTS_SPI_VALID_PPR_OPTIONS; cts->ccb_h.status = CAM_REQ_CMP; #else struct ahc_devinfo devinfo; struct ahc_initiator_tinfo *targ_info; struct tmode_tstate *tstate; struct ahc_transinfo *tinfo; long s; ahc_compile_devinfo(&devinfo, our_id, cts->ccb_h.target_id, cts->ccb_h.target_lun, channel, ROLE_UNKNOWN); targ_info = ahc_fetch_transinfo(ahc, devinfo.channel, devinfo.our_scsiid, devinfo.target, &tstate); if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) tinfo = &targ_info->current; else tinfo = &targ_info->user; ahc_lock(ahc, &s); cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB); if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) { if ((ahc->user_discenable & devinfo.target_mask) != 0) cts->flags |= CCB_TRANS_DISC_ENB; if ((ahc->user_tagenable & devinfo.target_mask) != 0) cts->flags |= CCB_TRANS_TAG_ENB; } else { if ((tstate->discenable & devinfo.target_mask) != 0) cts->flags |= CCB_TRANS_DISC_ENB; if ((tstate->tagenable & devinfo.target_mask) != 0) cts->flags |= CCB_TRANS_TAG_ENB; } cts->sync_period = tinfo->period; cts->sync_offset = tinfo->offset; cts->bus_width = tinfo->width; ahc_unlock(ahc, &s); cts->valid = CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID | CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID; cts->ccb_h.status = CAM_REQ_CMP; #endif } static void ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg) { struct ahc_softc *ahc; struct cam_sim *sim; sim = (struct cam_sim *)callback_arg; ahc = (struct ahc_softc *)cam_sim_softc(sim); switch (code) { case AC_LOST_DEVICE: { struct ahc_devinfo devinfo; long s; ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim), xpt_path_target_id(path), xpt_path_lun_id(path), SIM_CHANNEL(ahc, sim), ROLE_UNKNOWN); /* * Revert to async/narrow transfers * for the next device. */ ahc_lock(ahc, &s); ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE); ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL, /*period*/0, /*offset*/0, /*ppr_options*/0, AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE); ahc_unlock(ahc, &s); break; } default: break; } } static void ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments, int error) { struct scb *scb; union ccb *ccb; struct ahc_softc *ahc; long s; scb = (struct scb *)arg; ccb = scb->io_ctx; ahc = (struct ahc_softc *)ccb->ccb_h.ccb_ahc_ptr; if (error != 0) { if (error == EFBIG) ahc_set_transaction_status(scb, CAM_REQ_TOO_BIG); else ahc_set_transaction_status(scb, CAM_REQ_CMP_ERR); if (nsegments != 0) bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); ahc_free_scb(ahc, scb); xpt_done(ccb); return; } if (nsegments != 0) { struct ahc_dma_seg *sg; bus_dma_segment_t *end_seg; bus_dmasync_op_t op; end_seg = dm_segs + nsegments; /* Copy the segments into our SG list */ sg = scb->sg_list; while (dm_segs < end_seg) { sg->addr = dm_segs->ds_addr; /* XXX Add in the 5th byte of the address later. */ sg->len = dm_segs->ds_len; sg++; dm_segs++; } /* * Note where to find the SG entries in bus space. * We also set the full residual flag which the * sequencer will clear as soon as a data transfer * occurs. */ scb->hscb->sgptr = scb->sg_list_phys | SG_FULL_RESID; if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_PREREAD; else op = BUS_DMASYNC_PREWRITE; bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op); if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) { struct target_data *tdata; tdata = &scb->hscb->shared_data.tdata; tdata->target_phases |= DPHASE_PENDING; if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) tdata->data_phase = P_DATAOUT; else tdata->data_phase = P_DATAIN; /* * If the transfer is of an odd length and in the * "in" direction (scsi->HostBus), then it may * trigger a bug in the 'WideODD' feature of * non-Ultra2 chips. Force the total data-length * to be even by adding an extra, 1 byte, SG, * element. We do this even if we are not currently * negotiated wide as negotiation could occur before * this command is executed. */ if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0 && (ccb->csio.dxfer_len & 0x1) != 0 && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { nsegments++; if (nsegments > AHC_NSEG) { ahc_set_transaction_status(scb, CAM_REQ_TOO_BIG); bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); ahc_free_scb(ahc, scb); xpt_done(ccb); return; } sg->addr = ahc->dma_bug_buf; sg->len = 1; sg++; } } sg--; sg->len |= AHC_DMA_LAST_SEG; /* Copy the first SG into the "current" data pointer area */ scb->hscb->dataptr = scb->sg_list->addr; scb->hscb->datacnt = scb->sg_list->len; } else { scb->hscb->sgptr = SG_LIST_NULL; scb->hscb->dataptr = 0; scb->hscb->datacnt = 0; } scb->sg_count = nsegments; ahc_lock(ahc, &s); /* * Last time we need to check if this SCB needs to * be aborted. */ if (ahc_get_transaction_status(scb) != CAM_REQ_INPROG) { if (nsegments != 0) bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap); ahc_free_scb(ahc, scb); xpt_done(ccb); ahc_unlock(ahc, &s); return; } LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); ccb->ccb_h.status |= CAM_SIM_QUEUED; if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) { if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT) ccb->ccb_h.timeout = 5 * 1000; ccb->ccb_h.timeout_ch = timeout(ahc_timeout, (caddr_t)scb, (ccb->ccb_h.timeout * hz) / 1000); } /* * We only allow one untagged transaction * per target in the initiator role unless * we are storing a full busy target *lun* * table in SCB space. */ if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 && (ahc->features & AHC_SCB_BTT) == 0) { struct scb_tailq *untagged_q; untagged_q = &(ahc->untagged_queues[ccb->ccb_h.target_id]); TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); if (TAILQ_FIRST(untagged_q) != scb) { ahc_unlock(ahc, &s); return; } } scb->flags |= SCB_ACTIVE; if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { pause_sequencer(ahc); if ((ahc->flags & AHC_PAGESCBS) == 0) ahc_outb(ahc, SCBPTR, scb->hscb->tag); ahc_outb(ahc, SCB_TAG, scb->hscb->tag); ahc_outb(ahc, RETURN_1, CONT_MSG_LOOP); unpause_sequencer(ahc); } else { ahc_queue_scb(ahc, scb); } ahc_unlock(ahc, &s); } static void ahc_poll(struct cam_sim *sim) { ahc_intr(cam_sim_softc(sim)); } static void ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim, struct ccb_scsiio *csio, struct scb *scb) { struct hardware_scb *hscb; struct ccb_hdr *ccb_h; hscb = scb->hscb; ccb_h = &csio->ccb_h; if (ccb_h->func_code == XPT_SCSI_IO) { hscb->cdb_len = csio->cdb_len; if ((ccb_h->flags & CAM_CDB_POINTER) != 0) { if (hscb->cdb_len > sizeof(hscb->cdb32) || (ccb_h->flags & CAM_CDB_PHYS) != 0) { ahc_set_transaction_status(scb, CAM_REQ_INVALID); xpt_done(scb->io_ctx); ahc_free_scb(ahc, scb); return; } if (hscb->cdb_len > 12) { memcpy(hscb->cdb32, csio->cdb_io.cdb_ptr, hscb->cdb_len); hscb->shared_data.cdb_ptr = scb->cdb32_busaddr; } else { memcpy(hscb->shared_data.cdb, csio->cdb_io.cdb_ptr, hscb->cdb_len); } } else { if (hscb->cdb_len > 12) { memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes, hscb->cdb_len); hscb->shared_data.cdb_ptr = scb->cdb32_busaddr; } else { memcpy(hscb->shared_data.cdb, csio->cdb_io.cdb_bytes, hscb->cdb_len); } } } /* Only use S/G if there is a transfer */ if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) { /* We've been given a pointer to a single buffer */ if ((ccb_h->flags & CAM_DATA_PHYS) == 0) { int s; int error; s = splsoftvm(); error = bus_dmamap_load(ahc->buffer_dmat, scb->dmamap, csio->data_ptr, csio->dxfer_len, ahc_execute_scb, scb, /*flags*/0); if (error == EINPROGRESS) { /* * So as to maintain ordering, * freeze the controller queue * until our mapping is * returned. */ xpt_freeze_simq(sim, /*count*/1); scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ; } splx(s); } else { struct bus_dma_segment seg; /* Pointer to physical buffer */ if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE) panic("ahc_setup_data - Transfer size " "larger than can device max"); seg.ds_addr = (bus_addr_t)csio->data_ptr; seg.ds_len = csio->dxfer_len; ahc_execute_scb(scb, &seg, 1, 0); } } else { struct bus_dma_segment *segs; if ((ccb_h->flags & CAM_DATA_PHYS) != 0) panic("ahc_setup_data - Physical segment " "pointers unsupported"); if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0) panic("ahc_setup_data - Virtual segment " "addresses unsupported"); /* Just use the segments provided */ segs = (struct bus_dma_segment *)csio->data_ptr; ahc_execute_scb(scb, segs, csio->sglist_cnt, 0); } } else { ahc_execute_scb(scb, NULL, 0, 0); } } static void ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb) { if ((scb->flags & SCB_RECOVERY_SCB) == 0) { struct scb *list_scb; scb->flags |= SCB_RECOVERY_SCB; /* * Take all queued, but not sent SCBs out of the equation. * Also ensure that no new CCBs are queued to us while we * try to fix this problem. */ if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { xpt_freeze_simq(SCB_GET_SIM(ahc, scb), /*count*/1); scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ; } /* * Go through all of our pending SCBs and remove * any scheduled timeouts for them. We will reschedule * them after we've successfully fixed this problem. */ LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) { union ccb *ccb; ccb = list_scb->io_ctx; untimeout(ahc_timeout, list_scb, ccb->ccb_h.timeout_ch); } } } void ahc_timeout(void *arg) { struct scb *scb; struct ahc_softc *ahc; long s; int found; u_int last_phase; int target; int lun; int i; char channel; scb = (struct scb *)arg; ahc = (struct ahc_softc *)scb->io_ctx->ccb_h.ccb_ahc_ptr; ahc_lock(ahc, &s); /* * Ensure that the card doesn't do anything * behind our back. Also make sure that we * didn't "just" miss an interrupt that would * affect this timeout. */ do { ahc_intr(ahc); pause_sequencer(ahc); } while (ahc_inb(ahc, INTSTAT) & INT_PEND); ahc_print_path(ahc, scb); if ((scb->flags & SCB_ACTIVE) == 0) { /* Previous timeout took care of me already */ printf("Timedout SCB %d handled by another timeout\n", scb->hscb->tag); unpause_sequencer(ahc); ahc_unlock(ahc, &s); return; } target = SCB_GET_TARGET(ahc, scb); channel = SCB_GET_CHANNEL(ahc, scb); lun = SCB_GET_LUN(scb); printf("SCB 0x%x - timed out ", scb->hscb->tag); /* * Take a snapshot of the bus state and print out * some information so we can track down driver bugs. */ last_phase = ahc_inb(ahc, LASTPHASE); for (i = 0; i < num_phases; i++) { if (last_phase == phase_table[i].phase) break; } printf("%s", phase_table[i].phasemsg); printf(", SEQADDR == 0x%x\n", ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8)); if (scb->sg_count > 0) { for (i = 0; i < scb->sg_count; i++) { printf("sg[%d] - Addr 0x%x : Length %d\n", i, scb->sg_list[i].addr, scb->sg_list[i].len); } } if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) { /* * Been down this road before. * Do a full bus reset. */ bus_reset: ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); found = ahc_reset_channel(ahc, channel, /*Initiate Reset*/TRUE); printf("%s: Issued Channel %c Bus Reset. " "%d SCBs aborted\n", ahc_name(ahc), channel, found); } else { /* * If we are a target, transition to bus free and report * the timeout. * * The target/initiator that is holding up the bus may not * be the same as the one that triggered this timeout * (different commands have different timeout lengths). * If the bus is idle and we are actiing as the initiator * for this request, queue a BDR message to the timed out * target. Otherwise, if the timed out transaction is * active: * Initiator transaction: * Stuff the message buffer with a BDR message and assert * ATN in the hopes that the target will let go of the bus * and go to the mesgout phase. If this fails, we'll * get another timeout 2 seconds later which will attempt * a bus reset. * * Target transaction: * Transition to BUS FREE and report the error. * It's good to be the target! */ u_int active_scb_index; active_scb_index = ahc_inb(ahc, SCB_TAG); if (last_phase != P_BUSFREE && (active_scb_index < ahc->scb_data->numscbs)) { struct scb *active_scb; /* * If the active SCB is not from our device, * assume that another device is hogging the bus * and wait for it's timeout to expire before * taking additional action. */ active_scb = &ahc->scb_data->scbarray[active_scb_index]; if (active_scb->hscb->scsiid != scb->hscb->scsiid || active_scb->hscb->lun != scb->hscb->lun) { struct ccb_hdr *ccbh; u_int newtimeout; ahc_print_path(ahc, scb); printf("Other SCB Timeout%s", (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0 ? " again\n" : "\n"); scb->flags |= SCB_OTHERTCL_TIMEOUT; newtimeout = MAX(active_scb->io_ctx->ccb_h.timeout, scb->io_ctx->ccb_h.timeout); ccbh = &scb->io_ctx->ccb_h; scb->io_ctx->ccb_h.timeout_ch = timeout(ahc_timeout, scb, (newtimeout * hz) / 1000); ahc_unlock(ahc, &s); return; } /* It's us */ if ((scb->hscb->control & TARGET_SCB) != 0) { /* * Send back any queued up transactions * and properly record the error condition. */ ahc_freeze_devq(ahc, scb); ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); ahc_freeze_scb(scb); ahc_done(ahc, scb); /* Will clear us from the bus */ restart_sequencer(ahc); return; } ahc_set_recoveryscb(ahc, active_scb); ahc_outb(ahc, MSG_OUT, MSG_BUS_DEV_RESET); ahc_outb(ahc, SCSISIGO, last_phase|ATNO); ahc_print_path(ahc, active_scb); printf("BDR message in message buffer\n"); active_scb->flags |= SCB_DEVICE_RESET; active_scb->io_ctx->ccb_h.timeout_ch = timeout(ahc_timeout, (caddr_t)active_scb, 2 * hz); unpause_sequencer(ahc); } else { int disconnected; /* XXX Shouldn't panic. Just punt instead */ if ((scb->hscb->control & TARGET_SCB) != 0) panic("Timed-out target SCB but bus idle"); if (last_phase != P_BUSFREE && (ahc_inb(ahc, SSTAT0) & TARGET) != 0) { /* XXX What happened to the SCB? */ /* Hung target selection. Goto busfree */ printf("%s: Hung target selection\n", ahc_name(ahc)); restart_sequencer(ahc); return; } if (ahc_search_qinfifo(ahc, target, channel, lun, scb->hscb->tag, ROLE_INITIATOR, /*status*/0, SEARCH_COUNT) > 0) { disconnected = FALSE; } else { disconnected = TRUE; } if (disconnected) { u_int active_scb; ahc_set_recoveryscb(ahc, scb); /* * Simply set the MK_MESSAGE control bit. */ scb->hscb->control |= MK_MESSAGE; scb->flags |= SCB_QUEUED_MSG | SCB_DEVICE_RESET; /* * Mark the cached copy of this SCB in the * disconnected list too, so that a reconnect * at this point causes a BDR or abort. */ active_scb = ahc_inb(ahc, SCBPTR); if (ahc_search_disc_list(ahc, target, channel, lun, scb->hscb->tag, /*stop_on_first*/TRUE, /*remove*/FALSE, /*save_state*/FALSE)) { u_int scb_control; scb_control = ahc_inb(ahc, SCB_CONTROL); scb_control |= MK_MESSAGE; ahc_outb(ahc, SCB_CONTROL, scb_control); } ahc_outb(ahc, SCBPTR, active_scb); /* * Actually re-queue this SCB in case we can * select the device before it reconnects. * Clear out any entries in the QINFIFO first * so we are the next SCB for this target * to run. */ ahc_search_qinfifo(ahc, SCB_GET_TARGET(ahc, scb), channel, SCB_GET_LUN(scb), SCB_LIST_NULL, ROLE_INITIATOR, CAM_REQUEUE_REQ, SEARCH_COMPLETE); ahc_print_path(ahc, scb); printf("Queuing a BDR SCB\n"); ahc->qinfifo[ahc->qinfifonext++] = scb->hscb->tag; if ((ahc->features & AHC_QUEUE_REGS) != 0) { ahc_outb(ahc, HNSCB_QOFF, ahc->qinfifonext); } else { ahc_outb(ahc, KERNEL_QINPOS, ahc->qinfifonext); } scb->io_ctx->ccb_h.timeout_ch = timeout(ahc_timeout, (caddr_t)scb, 2 * hz); unpause_sequencer(ahc); } else { /* Go "immediatly" to the bus reset */ /* This shouldn't happen */ ahc_set_recoveryscb(ahc, scb); ahc_print_path(ahc, scb); printf("SCB %d: Immediate reset. " "Flags = 0x%x\n", scb->hscb->tag, scb->flags); goto bus_reset; } } } ahc_unlock(ahc, &s); } static void ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb) { union ccb *abort_ccb; abort_ccb = ccb->cab.abort_ccb; switch (abort_ccb->ccb_h.func_code) { case XPT_ACCEPT_TARGET_IO: case XPT_IMMED_NOTIFY: case XPT_CONT_TARGET_IO: { struct tmode_tstate *tstate; struct tmode_lstate *lstate; struct ccb_hdr_slist *list; cam_status status; status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate, &lstate, TRUE); if (status != CAM_REQ_CMP) { ccb->ccb_h.status = status; break; } if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) list = &lstate->accept_tios; else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY) list = &lstate->immed_notifies; else list = NULL; if (list != NULL) { struct ccb_hdr *curelm; int found; curelm = SLIST_FIRST(list); found = 0; if (curelm == &abort_ccb->ccb_h) { found = 1; SLIST_REMOVE_HEAD(list, sim_links.sle); } else { while(curelm != NULL) { struct ccb_hdr *nextelm; nextelm = SLIST_NEXT(curelm, sim_links.sle); if (nextelm == &abort_ccb->ccb_h) { found = 1; SLIST_NEXT(curelm, sim_links.sle) = SLIST_NEXT(nextelm, sim_links.sle); break; } curelm = nextelm; } } if (found) { abort_ccb->ccb_h.status = CAM_REQ_ABORTED; xpt_done(abort_ccb); ccb->ccb_h.status = CAM_REQ_CMP; } else { printf("Not found\n"); ccb->ccb_h.status = CAM_PATH_INVALID; } break; } /* FALLTHROUGH */ } case XPT_SCSI_IO: /* XXX Fully implement the hard ones */ ccb->ccb_h.status = CAM_UA_ABORT; break; default: ccb->ccb_h.status = CAM_REQ_INVALID; break; } xpt_done(ccb); } void ahc_send_async(struct ahc_softc *ahc, char channel, u_int target, u_int lun, ac_code code) { struct ccb_trans_settings cts; struct cam_path *path; void *arg; int error; arg = NULL; error = ahc_create_path(ahc, channel, target, lun, &path); if (error != CAM_REQ_CMP) return; switch (code) { case AC_TRANSFER_NEG: #ifdef AHC_NEW_TRAN_SETTINGS cts.type = CTS_TYPE_CURRENT_SETTINGS; #else cts.flags = CCB_TRANS_CURRENT_SETTINGS; #endif cts.ccb_h.path = path; cts.ccb_h.target_id = target; cts.ccb_h.target_lun = lun; ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id : ahc->our_id_b, channel, &cts); arg = &cts; break; case AC_SENT_BDR: case AC_BUS_RESET: break; default: panic("ahc_send_async: Unexpected async event"); } xpt_async(code, path, arg); } void ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, int enable) { } int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg) { ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF, M_NOWAIT); if (ahc->platform_data == NULL) return (ENOMEM); memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data)); return (0); } void ahc_platform_free(struct ahc_softc *ahc) { if (ahc->platform_data != NULL) { if (ahc->platform_data->regs != NULL) bus_release_resource(ahc->dev_softc, ahc->platform_data->regs_res_type, ahc->platform_data->regs_res_id, ahc->platform_data->regs); if (ahc->platform_data->irq != NULL) bus_release_resource(ahc->dev_softc, ahc->platform_data->irq_res_type, 0, ahc->platform_data->irq); free(ahc->platform_data, M_DEVBUF); } } int ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc) { /* We don't sort softcs under FreeBSD so report equal always */ return (0); } #if UNUSED static void ahc_dump_targcmd(struct target_cmd *cmd) { uint8_t *byte; uint8_t *last_byte; int i; byte = &cmd->initiator_channel; /* Debugging info for received commands */ last_byte = &cmd[1].initiator_channel; i = 0; while (byte < last_byte) { if (i == 0) printf("\t"); printf("%#x", *byte++); i++; if (i == 8) { printf("\n"); i = 0; } else { printf(", "); } } } #endif